baber/WOPTO huggingface dataset:
Patent CA-2062963-A1 (CA)
Inventor: BERNINGER MARK S
IPC: C12Q1/68
Filed: 1991-05-10
Abstract: This invention discloses a scheme for producing nucleic acid end products that are functionally or exactly identical to the starting products, thereby resulting in exponential amplification of a desired nucleic acide sequence. Specifically, sequences are cycled between RNA and DNA forms using the following basic steps: (1) a T7 RNA polymerase promoter is ligated onto a single-stranded DNA template; (2) T7 RNA polymerase makes many copies of RNA: (3) a complementary DNA is made from the RNA by extension of a primer by reverse transcriptase; and (4) the RNA template is removed by ribonuclease H. This amplification method is useful for purposes such as genetic research and diagnostic assays.
Patent CA-2063876-A1 (CA)
Title: Aqueous gellable composition, useful for modifying the permeability of a petroleum reservoir
Inventor: LOCKHART THOMAS P
IPC: C09K8/58
Filed: 1992-03-24
Abstract: An aqueous gellable composition having a delayed gelling time is disclosed, which contains a water-soluble polymer crosslinkable with Cr3+ and a crosslinking and gel-retarding system containing a Cr3+ ion and a salicylic acid ligand, wherein said ligand can be in free form, or in the form of a complex with Cr3+, or partially in free form and partially in complexed from. Such a composition is useful for modifying the permeability in petroleum reservoirs, within a wide range of temperatures, of from about 60°C to 120°C, or higher temperatures.
Patent CA-2065808-A1 (CA)
Title: Uniform polyvinylidene difluoride membrane and method of making
Inventor: SIPSAS IOANNIS P
IPC: C08F114/22
Filed: 1992-04-10
Abstract: A method is provided for enhancing the characteristics of a polyvinylidene difluoride membrane comprising heating the membrane to at least 80°C for a time sufficient to achieve a state such that, when the membrane is subsequently hydrophilized, the membrane has substantially uniform hydrophilic properties.
Patent CA-2065872-A1 (CA)
Title: Combination Back-Up Light and Sound Emitting Device
Inventor: GOTTLIEB MARK
IPC: B60Q5/00
Filed: 1991-07-25
Abstract: A combination back-up light and sound emitting device (2) includes a housing formed by a reflector (8) and a light transmitting cover (6). A light bulb (17) is mounted within the reflector (8), as is a piezoelectric speaker (24). Both the light bulb (17) and the speaker (24) are electrically connected to an electrical socket (12) in the reflector, into which an electrical plug from the ve-hicle may be fitted. Therefore, once the housing is mounted to a vehicle, electrical connection for both the light bulb (17) and the sound emitting device can be achieved by the single operation of inserting the electri-cal plug into the socket (12).
Patent CA-2066996-A1 (CA)
Title: Retrieving tool for downhole packers utilizing non-rotational workstrings
Inventor: BURNS TIMOTHY D SR
IPC: E21B23/00
Filed: 1992-04-24
Abstract: Abstract An  apparatus  for  retrieving  downhole  devices  is disclosed.  The apparatus of the present invention includes a retrieving  device  that  can  be  run  on  non-conventional workstrings such as coiled tubing, wireline, or electric line.          The apparatus comprises a power mandrel,  an inner sleeve mandrel slidably disposed within the power mandrel, and an overshot means.  Means are provided to translate longitudinal movement of the power mandrel into rotational movement of the inner mandrel.
Patent CA-2069196-A1 (CA)
Inventor: HAVEL KAREL
IPC: G02F3/00
Filed: 1992-05-21
Abstract: A logic device simultaneously indicates, on a single multicolor optical output, a first logical function and a second diverse logical function of its inputs. The multicolor optical output of the logic device is illuminated in accordance with the first logical function of the inputs.      The color of the multicolor optical output is controlled in accordance with the second logical function of the inputs.
Patent CA-2070378-A1 (CA)
Title: Belt tensioner and method of making the same
Inventor: SIDWELL JOHN N
IPC: F16H7/12
Filed: 1990-10-04
Abstract: Various belt tensioners and methods of making them are provided herein. One embodiment of such belt tensioner includes a support to be fixed relative to the belt. A belt engager is carried by the support and is movable relative thereto. Springs are operatively associated with the support and the belt engager to urge the belt engager relative to the support and against the belt with a force to tension the belt .      The support includes a shaft having a longitudinal axis. The belt engager includes an arm which is rotatably mounted on the shaft. The arm has a bearing surface which is angled relative to the axis. The support has a bearing surface which is angled relative to the axis and which faces the bearing surface of the arm. A bushing is disposed between the bearing surfaces and is in engagement therewith to facilitate movement therebetween, and to tend to prevent cocking of the arm on the shaft when the belt engager is tensioning the belt.
Patent CA-2072186-A1 (CA)
Title: Film capacitor
Inventor: OZAKI YOSHIHIDE
IPC: H01G4/20
Filed: 1992-06-23
Abstract: ABSTRACT OF THE DISCLOSURE     Disclosed herein is a film capacitor obtained by stacking or winding a laminate comprising: a plastic film having a vapor-deposited metal layer at least on one surface thereof, and a coating layer composed of an amorphous polyolefin formed on said vapor-deposition layer.
Patent CA-2077685-A1 (CA)
Title: Process and installation for purifying waste water
Inventor: WOLF MICHAEL B
IPC: C02F11/10
Filed: 1991-03-16
Abstract: ABSTRACT            In a process for removing organic impurities and heavy metals from industrial,  commercial or communal waste water,  loaded  drinking  water,  refuse  dump  drainage water  or  aqueous  special  wastes,  the wet pyrolysis residues produced during the extraction of usable gas in the pyrolytic processing of refuse are introduced into  one  or  more  aerated  filter  basins  (17)  or filtration reactors  (26)  connected in parallel or in series.  The waste water, loaded drinking water, refuse dump drainage water or  liquid special wastes  to be filtered or purified are pumped through the pyrolysis residue until its capacity for physical adsorption is exhausted.
Patent CA-2077929-A1 (CA)
Title: Semiconductor integrated circuit
Inventor: YONEDA MASATO
IPC: G11C15/00
Filed: 1992-09-10
Abstract: ABSTRACT OF THE DISCLOSURE    A semiconductor integrated circuit which has a CAM structure based on nonvolatile memories and is capable of effectively suppressing through current and utilizable for forming a flexible CAM of large scale integration comprises a first memory cell for defining the electrical connection or otherwise the nonconnection between a first data line and an match line, a second memory cell for defining the electrical nonconnection or otherwise the connection between a second data line and the match line, a selective transistor for making and breaking the connection between each of the first and the second data lines and the match line in accordance with the definition of the connections of the first and second memory cells.  The threshold voltage of the selective transistor has a predetermined value incorporated during the fabrication process.  The semiconductor integrated circuit also has means for electrically connecting a selective word line connected to the gate electrode of the selective transistor to the match line and means for making the selective word line afloat or otherwise has no selective transistor.  The threshold voltage of each nonvolatile memory forming each of the first and second memory cells is so regulated that it is set at a predetermined voltage.          Therefore the semiconductor integrated circuit according to the present invention is capable of retrieving data from a number of memory cells at high speed without mutual interference and of providing an associative memory unit for use as a high-speed, large capacity data base.
Patent CA-2078992-A1 (CA)
Inventor: SCHMID GERHARD
IPC: C12N9/10
Filed: 1991-03-22
Abstract: The invention rleates to .gamma.-cyclodextrin glycosyl transferases obtainable by screening bacteria for the secretion of a .gamma.-cyclodextrin glycosyl transferase, the bacteria are characterized and the .gamma.-cyclodextrin glycosyl transferase of the bacteria is purified and characterized biochemically. These enzymes can be used for the production of .gamma.cyclodextrin from starch.
Patent CA-2080387-A1 (CA)
Title: Resilient signalling post
Inventor: HUGRON DENIS P
IPC: E01F9/627
Filed: 1993-01-13
Abstract: ABSTRACT OF THE DISCLOSURE     A signalling panel comprises two superposed transparent plies  of plastic material peripherally  secured  together.   The plates have a cylindro-convex configuration and the two plies are slightly  spaced from each other to provide a  slot  therebetween for  receiving a flexible sheet displaying a visible  information through  the two plies.   The panel when narrow is secured  to  a rigid  base  while when wide is contemplated to be secured  to  a flexible base member.
Patent CA-2081266-A1 (CA)
Title: Safety ski grip
Inventor: DICKIE ROBERT G
IPC: A63C11/22
Filed: 1992-10-23
Abstract: SAFETY SKI GRIP            ABSTRACT OF THE DISCLOSURE:     A ski pole grip having an integral shell for protecting one's hands during a fall and more specifically for precluding one's thumb from being injured especially from extending outwardly and thereby bearing the brunt of impact during a fall, is disclosed. The shell partially surrounds the grip and is attached to the grip at the top and bottom thereof. The grip and shell are preferably molded in one integral piece with the shell in an inverted position. The shell is folded down to partially surround the grip -- it is then in its in use configuration and can be inserted onto a ski pole.
Patent CA-2081440-A1 (CA)
Title: Electrical synthesis of palladium hydroxide compounds
Inventor: ABYS JOSEPH A
IPC: C25B1/00
Filed: 1992-10-26
Abstract: This invention embodies a process for synthesizing electrodialythically palladium ammine hydroxide for use in palladium plating baths. The electrodialysis takes place in a cell with a catholyte, a product and an anolyte compartments which are divided by a fluorinated anion permselective membranes. Catholyte solution readily supplies OH ions, raw starting solution contains palladium ammine ions and anions capable of migrating into the anolyte compartment, and anolyte solution readily absorbs the anions from the raw solution. Electrodes, placed in the outer compartments, are placed no more than 5 cm apart. The process is conducted with current densities of 500 ASF or less, with 200 ASF being preferable, with current efficiencies of 50 to 90 percent, with 60-80 percent being preferable, and at bath temperatures of from above freezing to 40°C, with 25-40°C being preferable. The electrodialysis results in a stable palladium diammine hydroxide solution containing a small fraction of starting palladium diammine compound, such as palladium diammine chloride, making the final solution readily useable either as a replenishing or a plating solution.
Patent CA-2083595-A1 (CA)
Inventor: RYAN CLARENCE A JR
IPC: A01N37/42
Filed: 1991-05-24
Abstract: The expression of plant defense proteins is induced in plant tissue by contacting plants to be treated with a defense protein inducing agent. The inducing agent, which may be jasmonic acid, lower alkyl esters of jasmonic acid or jasmonic acid-like deriva-tive compounds, induces the expression of genes in the plants resulting in the production of defense proteins, such as proteinase inhibitors; thionins, chitinases and .beta.-glucanases. Plants may be contacted with the inducing agent by direct application to plant tissue or by airborne transmission of the inducing agent.
Patent CA-2083623-A1 (CA)
Title: Radiation-sensitive compositions
Inventor: STEINMANN ALFRED
IPC: C08G63/181
Filed: 1992-11-24
Abstract: Radiation-sensitive compositions Abstract of the Disclosure Radiation-sensitive compositions comprising (a) a polyester containing structural repeating units of formula (I)        (I), wherein Z is a radical of formulae (IIa)-(IIh)      (IIa),      (IIb),       (IIc),   (IId),    (IIe),       (IIf),      (IIg),            (IIh), wherein Y is a direct bond, C1-C20 alkylene, phenylene, -CH2-C6H4-CH2-, cyclopentylene or cyclohexylene, and R1 and R2 are each independently of the other hydrogen, methyl or ethyl, with the proviso that R1 and R2 are not simultaneously hydrogen, and (b) a substance that generates acid upon exposure to actinic radiation, form a highly sensitive high resolution positive photoresist formulation which is suitable for DUV lithography and, in particular, for making integrated circuits.
Patent CA-2083732-A1 (CA)
Inventor: HAUSCHILD MARK E
IPC: H04M3/24
Filed: 1992-11-25
Abstract: A channel unit for providing service to four channels in a digital loop carrier transmission system. The channel unit includes a first register that stores information related exclusively to a first and second channel and a second register that stores information related exclusively to a third and fourth channel. The channel unit also includes a system for taking a logical OR function of the bits in the second register and writing the result into another portion of the first register.
Patent CA-2083766-A1 (CA)
Inventor: FLOC H ROBERT
IPC: C07F9/74
Filed: 1992-11-25
Abstract: The medicinal product comprises as active prin-ciple a melarsomine hydrochloride preparation having a purity of between 98.5 and 100 %. The process for obtaining this preparation is stated essentially as follows: - step 1, trichlorotriazine (TCT) is converted to diaminochlorotriazine (DCT) in an ammoniacal medium; - step 2, the DCT is converted to melarsen acid hydrochloride (MAH) in the presence of arsanilic acid; - step 3, the MAH is reduced to melarsen oxide dehydrate; and - step 4, the melarsen oxide dehydrate is converted to melarsomine dihydrochloride in the presence of cystea-mine hydrochloride. In each step, a purified preparation of the corresponding intermediate product, or final product in step 4, is obtained.
Patent CA-2084310-A1 (CA)
Inventor: SHOCKEY RICK L
IPC: A61M25/01
Filed: 1991-05-17
Abstract: A guidewire and guidewire assembly (10) for placement within a blood vessel for penetrating an occlusion therein. The guidewire comprises a length of flexible wire (12) having a concentric lumen (14) running its entire length and a distal end portion (20) having an arcuate tip (22) and a diameter greater than that of the wire immediately proximal thereto. The guidewire assembly comprises the guidewire described along with a flexible stylet (32) substantially the same length as the flexible wire and disposed within the lumen of the wire. In operation, the distal end portion is positioned in the blood vessel against an occlusion, and a dottering action is thereafter provided whereby the distal end portion repeatedly impinges on the occlusion until penetration of the occlusion occurs.
Patent CA-2085442-A1 (CA)
Title: Mobile log-in capability featuring fixed physical translations and portable logical translations
Inventor: HASSLER KERRY W
IPC: H04M3/523
Filed: 1992-12-15
Abstract: In a telecommunications system that includes a plurality of user terminals and terminal translations that define attributes of the individual terminals, shared use of the terminals by a plurality of users or use by a user of different ones of the terminals at different times is facilitated by associating each terminal's physical translations, comprising for each terminal those attributes that are independent of the users of the terminal and including a physical extension number, with the corresponding terminals, associating each terminal's default terminal translations, comprising for each terminal those attributes that are dependent on the users of the terminal and including a call-coverage path, with the corresponding terminals, and associating each user's logical translations, comprising for each user those attributes that are independent of the terminals used by the user and including a logical extension number and a call-coverage path, with the corresponding users.  Prior to a user logging on at a terminal, call processing uses the terminal's associated physical and default terminal translations to process calls originating at the terminal or addressed to the terminal, and redirects calls addressed to the user to the call-coverage path specified in the user's logical translations.  Subsequent to a user logging on at a terminal, call processing uses the terminal's associated physical translations and the user's associated logical translations to process calls originating at the terminal or addressed to the user, and continues to use the terminal's associated physical and default terminal translations to process calls addressed to the terminal.
Patent CA-2087832-A1 (CA)
Title: Method and apparatus for controlling an inverter
Inventor: MIYAZAKI SATOSHI
IPC: H02M7/48
Filed: 1993-01-21
Abstract: An inverter control apparatus comprises a controller, a  mode  decision  circuit  and  a  voltage  reference conversion circuit. The mode decision circuit determines one of three kinds of modes which may be used to control the inverter, namely, a normal mode, a rectangle mode and zero correction mode selected according to values and polarities of multi-phase voltage reference signals. The voltage reference conversion circuit corrects the voltage reference signals according to the determined mode in the mode decision circuit.  In the case of the normal mode, the mode decision circuit outputs the previous voltage reference  signal V~    without  change as  the new or corrected voltage reference signals.  In the case of the rectangle mode, the circuit fixes the voltage reference signal V~ having the greatest value of the three phase (U-phase,  V-phase and W-phase)  to a minimum voltage reference Vmin which  is  of  opposite polarity to the selected  greatest  value  signal,   or,   in  another embodiment,  to  a  zero  value.    Further  the  circuit converts  the  others  voltage  reference  signals  to corrected voltage reference signals without change of line voltage.    The control circuit permits control of the inverter even in a regime of low reference voltage which would otherwise  result  in  an  uncontrolled  region  of  the inverter.
Patent CA-2088879-A1 (CA)
Title: Device for hanging up articles on a wall
Inventor: TREMBLAY GERMAIN
IPC: A63C11/02
Filed: 1993-02-08
Abstract: ABSTRACT OF THE DISCLOSURE              A device for hanging up articles on a generally vertical wall comprises at least one wooden board member screwed to that wall and provided with a plurality of threaded holes therein.  A plurality of wooden pins each have a threaded end whereby they can be  screwed  in  the holes  of  the  board member  in accordance with different arrangements selected in function of the nature of the articles to be hung up on the wall.
Patent CA-2089122-A1 (CA)
Inventor: JENNINGS BERNARD A
IPC: E21B10/00
Filed: 1993-02-09
Abstract: ABSTRACT   An abrasive tool such as a drill bit has a body with a working face (10). Undercut recesses (12) are formed in the working face (10). Cutting inserts (16) which present working ends (20) are located in the recesses (12). Locking means (24) in the recesses engage between the undercuts (14) and formations (22) on the inserts (16). This locks the inserts (16) against withdrawal from the recesses (12).
Patent CA-2091807-A1 (CA)
Title: Counterbalanced orbital drive mechanism for saws and the like
Inventor: FARMERIE JOSEPH G
IPC: B23D51/16
Filed: 1993-03-17
Abstract: A drive gear is mounted for rotation in a plane parallel with the axis of rotation of the output member of the motor. The gear includes an annular series of beveled gear teeth in meshing engagement with beveled pinion teeth on the end of the motor output member. The drive gear includes a crank pin roller and an annular cam surface eccentric to the axis of rotation of the gear. The roller is received within a rectilinear slot in the plunger assembly thereby defining a scotch-yoke drive for reciprocating the plunger assembly. The plunger assembly includes planar cam follower formations engaged by the annular cam surface to provide an oscillating component of movement to the plunger assembly. The crank pin mounts a disk in eccentric relationship to the drive gear; this disk supports another crank pin and roller. A counterweight having a mass substantially the same as the plunger assembly has a rectilinear slot receiving the last-mentioned roller thereby constituting a second scotch-yoke drive for reciprocating the counterweight. The counterweight includes planar cam follower surfaces engaged with peripheral portions of the disk thereby imparting an oscillatory component to movement of the counterweight.
Patent CA-2091866-A1 (CA)
Title: Agent for treatment of chronic fatigue syndrome
Inventor: UCHIDA ATSUSHI
IPC: C08B37/00
Filed: 1993-03-17
Abstract: ABSTRACT OF THE DISCLOSURE   An agent for treatment of chronic fatigue syndrome, which comprises a polysaccharide having a .beta.-1, 3-glucoside bond in the main chain as an effective ingredient.
Patent CA-2094266-A1 (CA)
Inventor: SCHULTZ ROBERT K
IPC: A61K31/565
Filed: 1991-10-09
Abstract: Pharmaceutical solution aerosol formulations comprising beclomethasone 17,21 dipropionate, ethanol, and a propellant selected from the group consisting of 1,1,1,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane, and a mixture thereof.
Patent CA-2095100-A1 (CA)
Title: Olefin polymerization catalyst, process for its preparation, and its use
Inventor: HERRMANN HANS-FRIEDRICH
IPC: C08F4/642
Filed: 1993-04-28
Abstract: ABSTRACT:   Olefin polymerization catalyst, process for its preparation, and its use A supported polymerization catalyst which is applicable in all polymerization processes is comprised of the reaction product of (A) a supported organoaluminum compound and (B) a metallocene catalyst component.
Patent CA-2096819-A1 (CA)
Title: Process for improving the dyeability of fabrics and fibers
Inventor: PATTON ROBERT T
IPC: D06M13/385
Filed: 1993-05-21
Abstract: ABSTRACT        PROCESS FOR IMPROVING THE DYEABILITY OF           FABRICS AND FIBERS           The printability and/or dyeability of fabrics or fibers comprising polyhydroxylized polymers is improved by treating a dry causticized fabric or fiber with a dilute solution of an ammonium salt of Formula I or II:                                             (I)                 (II) and mixtures thereof, wherein R, R', R'' and R''' are C1-C10; X is sulfate, sulfonate or halide; and Z is selected from sulfate, sulfonate and halide .  After wetting to a water content of less than 50 percent by weight, the wetted fabric or fiber is heated to fix the ammonium salt.
Patent CA-2096956-A1 (CA)
Title: Liquid built detergent compositions
Inventor: HALL SEAN G
IPC: C11D1/83
Filed: 1991-11-26
Abstract: A liquid built detergent composition comprises a substantially anhydrous organic liquid phase comprising a water-miscible organic solvent having uniformly distributed therein a non-ionic surfactant and an alkali metal salt of an anionic surfactant acid which contains one or more sulphonic acid groups, said organic phase having dispersed therein a finely divided particulate builder.
Patent CA-2104417-A1 (CA)
Title: Enhancing the perceived strength of tobacco smoke
Inventor: SAMPSON JOHN R
IPC: A24B15/28
Filed: 1993-08-19
Abstract: ENHANCING THE PERCEIVED STRENGTH OF           TOBACCO SMOKE                       ABSTRACT         Perceived strength of a smoking article is enhanced by the inclusion in that article of an alkali metal borate, especially sodium tetraborate decahydrate.  The additive is preferably in the filter of such an article, of which the tobacco is preferably flue-cured.